Improvement in lamp-extinguishebs



L. M. SARGENT,

I Lamp Extinguisher. No. 70,125. PatentedOct. 22, 1867..

I 5M i W n W '1 a l 1 1166666 W H v mm. PHOTO-LITHOGRAPHER. WASHINGTON.BIC,

LUCIUS l\I. SARGENT, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO W. A.RICHARD- SON, HENRYD. WARD, AND GEORGE A. GATES, OF THE. SAME PLACE.

' Letters Patent N. 70,125, dated October- 22, 1867; antcdatecl October19, 1867.

' IMPROVEMENT IN LAldP-EXTINGUISHERS.

'Cilgr soon-e march to in tlgrstjiirtttts 33mm zmt mating part at flgctime.

To ALL WHOM IT MAY CONCERN:

Be it known that I, LUCIUS M. SARGENT, of Worcester, in the county ofWorcester, and State of Massa chusetts,'have invented certain new anduseful Improvements in Lamp-Extinguishers; and I do hereby declare thatthe following is a full, clear, and exact description of the same,reference being had to the accompanying drawings, making a. portion ofthis specification, iriwhich- Figure 1 is a plan or top view of thelower portion of a lamp-extinguisher constructed according to myinvention.

Figure 2 is a side view of such extinguisher.

Figure 3 is a vertical transverse section of the lower portion of thesame.

Figure dis a detached view of a portion of the same.

Similar letters of reference indicate corresponding parts in all thefigures.

This invention may be considered as an improvement upon thelamp-extinguisher which is the subject of Richardson and Ward's patent,hearing date April 3, 1866, and its object is to insure the moreconvenient and inexpensive attachment of the extinguisher to thelamp-burner, and also to increase the facility with which the; wings ofthe device may be operated to extinguish the'fiame, or be brought to andretained at a suitable distanceapa1't to permit the lamp to burn. Theinvention consists in the arrangement of the wings-of the extingui sh erand the stems operating the said wings upon a base-plate, which isconstructed to slide over the wicktub e and rest upon the centralportion of the base of the burner, whereby the extinguisher may becheaply manufactured, and be permanently attached to the lamp with verygreat convenience. The invention further consists in a stud or stop socombined with the wings of the extinguisher, and the arms and springsoperating the same, as to insure an equal movement of the said wings inopening out. or spreading apart to permit the lamp to burn. Theinvention further consists in the construction of the pivoting-stem towhich the wings just mentioned are attached, with their ends bentdownward, and so combined with aspring and a spring-catch that not onlymay the wings of the extinguisher be properly held apart while the lampis burning, but may also be brought together with very great quicknessand facility to extinguish the same. i

To enable others to understand the nature and construction of myinvention, I will proceed to describe it With reference to the drawings.

The perforated base of the lamp-burner is shown at A, the wick-tubethereof being marked a; The upper part of such burner is indicatedat Band may be hinged at one side, as shown in fig. 2, it being designedthatthe burner itself should be of any ordinary or su'itableconstruction, with the upper surface of the central por= tion I) of itsbase A around the wiek-tube a made nearly or quite flat, as shown morefully in fig. 3. Placed upon the top or upper surface of the centralportion 6, and surrounding the wick-tube a, is a plate, a, whichconstitutes the base of the extinguishing device, and which is shownseparately in fig. 4. This base-plate 'c is furnished at each end withtwo upright ears, 0, each of which is formed with a circular hole, asshown in the said figure, the said holes constitutingbearings for twohorizontal stems or slender rods, d, which are attached longitudinallyto the aforesaid base-plate a, one upon each side of the wick-tube. Oneend of each of these horizontal stems passes out through a notch, a'f,formed in the upper edge of the base A at one side thereof, and is bentdownward, as represented more clearly ato Vin fig. 2, the said endsconstituting arms, whereby the wings of the extingnisherare operated, ashereinafter set forth. Secured to the central part of the horizontal portion of each stem (Z, at the side of the wick-tube, is a wing c, thelower portion of which may be made narrowy,

but the upper part a" of which is of a width somewhat greater than thatof the-wick-tube, and is made of such form and projects inward in suchmanner that when the twowing's are brought toward each other the.

aforesaid upper portions thereof will cover and surround the top of thewicli -tube, as indicated in red outline in fig. 3, in order toextinguish the flame. Formed upon and projecting upward from one ofthelateral edges of the base-plate e is a stud or stop, 2*, which is sosituated as to prevent the adjacent ring frombeing moved beyond acertain distance from "the wiclctube, thepurpose of which will presentlyappear. I The two downwardly-projecting arms (F of thest ems (Z areconnected by a bent spring, in such manner that thesaid spring tends toforce the said arms apart, and consequently to bring the two wings etoward each other, with their upper portions 0" covering the top orupper end of the wick-tube a, as justhereinbefore explained. Firmlyattached at one end to the extremity of one of the arms 11* is aspring-catch, g, in the upper side of the opposite end of which is anotch, which, when the extremities of the aforesaid arms d* are broughttoward each other, catches upon the extremity of the other or remainingarm (1*, and thus holds the wings s with their upper portions 0 in theposition shown in the drawings, to uncover the top of the wick-tube andpermit the flame to burn. Inasmuch as the stud e limits the outwardmovement of the adjacent wing 11, it followsthat the said stud operatesto support the arm (1* connected with the said wing against the strainexerted upon it by the opposite or other arm cl" when the wings are thusspread apart, so that by these means the bringing of the wings to anequal and uniform distance from the wick-tube when thus spread apart isinsured.

When it is desired to extinguish the flame, the free or notched end ofthe spring-catch y is pressed downward, which, releasing the arms d",permits the springf to force apart the said arms, and bringing togetherthe upper portions d of the wings e, ,which, closely covering the top ofthe wick-tube, as hereinbefore-explained, suddenly and effectuallyextinguish the flame. I

Inasmuch as the several parts of tlle extinguishing device, includingthe base-plate thereof, may be put together previous to attaching theextinguisher to the lamp, and as such attachment may be permanently madeby simply soldering the base-plate to the upper surface of the centralportion of the lower part of the burner, or by other suitable orequivalent means, it follows that the device may be much more cheaplymade and applied to the burner than when made in the manner described inthe -hereinbeforemientioned patent of Richardson and Ward.

What I claim as my invention, and desire to secure by Letters Patent, is

1 The arrangement of the wings a and stems d upon the base-plate a,constructed as described, to be placed over the wick-tube a and securedupon the central portion b of the base of the burner, substantially asand for the purpose herein set forth.

2. The stud or stop 0*, in combination with the wings arms 1F, and'spring f, substantially as andfor the purpose herein set forth.

3. The combination of the downwardly-eatending arms (1*, operating thewings a, with the springf, and

spring-catch g, substantially as and for the purpose specified,

LUCIUS M. SARGENT.

Witnesses:

S. 13. J. GODDARD, CALEB DANA.

